Bell.



No. 663,374. Patented Dec. 4, I900. N. C. WALLENTHIN.

BELL.

(Appliatien filed Sept. 25, 1900.

mo Model.)

Witnesses. Inventor.

Attorneys m5 cams PETERS co. momumofl WASHINGTON. n c

Unrrnn TATES ATENT FFICE.

NILS O. WALLENTHIN, OF ATTLEBOROUGH, MASSACHUSETTS.

BELL.

SPECIFICATION forming part of Letters Patent No. 663,374, dated December 4, 1900.

Application filed September 25, 1900. Serial No, 31,053. \No model.)

To all whom it may concern:

Be it known that I, NILs C. WALLENTHIN, a resident of Attleborough, in the county of Bristol and State of Massachusetts, have in- Vented certain new and useful Improvements in Bells; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to the alarm-bells used on bicycles, automobiles, and elsewhere to give notice of the approach of vehicles or persons. It is fully explained and illustrated in this specification and the annexed drawings.

Figure 1 shows a bell complete, ready for use. Fig. 2 represents a view of the bell, taken from the near side of Fig. 1 and having a part of the bell broken away to show the mechanism inside. Fig. 3 shows a plan View of the operating parts, with the plate to which they are attached, the bell being removed. Fig. 4 is a perspective view of the working lever separate.

The objectof this invention is to produce a bell for alarm purposes that shall be light and simple in its construction, not liable to get out of order, and that can be made at a small cost. Its construction and operation are as follows:

B is a circular plate of metal of about the same diameter as the bell, and it has a vertical stud G firmly secured to it in its center or made integral with the plate. The bell A, which is of the shape of those used in clocks, is made fast to the top of the stud O by means of a screw 5 or otherwise, the height of the stud 0 being sufficient to hold the lower edge of the hell up clear of the plate, so as to allow the operating-lever H to project through to the outside of the bell and have freedom of motion. (See Fig. 2.) A notch can be made in the edge of the bell, as is sometimes done, for this purpose, if preferred. The hammer consists of a spring J, made, preferably, of wire, which is held by one end in a stud a, fast in a plate B near one edge. (See Fig. 3.) This spring J follows a curve nearly concentric with the edge of the plate to a point about opposite to the stud a, where a block or head D is made fast on it, and from this point the spring curves in near the stud O in the center and has its end bent outward to form a book i; for the inner end of the operatinglever H to catch on. The lever H, by means of which the bell is rung, is held to swing on a stud S, that screws into the plate B ashort distance in from the edge, so that the inner end of the lever shall catch the hook end not the spring J in the V-shaped hollow r, and as the lever is moved to the position of the dotted lines in Fig. 3 will carry the spring and the block D in toward the stud C until the hook o slips out of the notch r and the spring J rebounds and throws the block D against the bell. The lever H is returned back to place by means of a close spiral spring F, which has one end held on a pin cin the lever and the other end of the spring is held on the stud a. The inner end of the lever H slips under the hook c, which is raised slightly by the inclined side (see Fig. 4) of the V-shaped end to let the end of the lever pass under into its first position. To limit the motion of the lever H to what is required to ring the bell properly, two pins 0 c are inserted. in the plate B, as seen in Fig. 3, one at each limit of a stroke, to stop the lever. If it is desired to make a double stroke on the bell, another spring like the one J, with a block, can be,

placed above the one shown, and by making the hook end of it a little longer than that of the first spring it will slip out of the end of the lever H a little later and strike the bell a second blow, and the blows on the bell can be struck in couplets, which is considered more effective than a continuous ringing of it. This makes a very simple and effective alarmbell that may be attached to a bicycle or other vehicle or to a door to give notice of apersons entrance.

Having thus described my improvements, 1 claim as my invention and desire to secure by Letters Patent- 1. In an alarm-bell the combination of a bell, a plate with a central stud to hold said bell, a hammer consisting ofa spring having a block attached thereto, and having one end secured to said plate and its other end bent off at an angle to form a hook, a lever held to swing on a stud fastin said plate, and having its outer end extend out beyond the bell to form a handle, and its inner end arranged to catch the hooked end of said spring, a spring to return said lever after having rung the bell, substantially as described.

2. In an alarm bell the combination of a bell, a plate attached thereto, a hammer consisting of a spring with a block attached to it, secured by one end to said plate, and having its other end bent off at-an angle to form a hook, a lever held to swing on a stud fast in said plate, and having one end extend out beyond the bell to form a handle, and its inner end made with a groove to catch the hooked end of said spring and its upper side beveled to enable it to pass under the hook :5 on its return, with a spring attached to astud in the plate and to the lever to draw it back, and pins in said plate to limit the motion of the lever, substantially as described.

In testimony whereof I have hereunto set 20 my hand this 226. day of September, A. D.

NILS O. WALLENTHIN. In presence of- BENJ. ARNOLD, EDGAR S. MARSH. 

